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← ScienceWhich property controls electron flow in semiconductors, when increasing temperature?
A)Band gap energy shrinking enhances conduction✓
B)Atom size reduces lattice resistance
C)Debye length lowers electrostatic barriers
D)Phonon density increases electron speed
💡 Explanation
The band gap shrinks with increasing temperature primarily because of increased atomic vibrations disrupting the potential within the crystal lattice, via electron-phonon interaction. Therefore, enhanced electron excitation occurs and enhances conduction, rather than alternatives that affect different properties.
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